Tray insert



FIG. 1 is a top perspective view of a tray insert showing my design;

FIG. 2 is a top plan view;

FIG. 3 is an end plan view, the opposed end being a mirror image thereof;

FIG. 4 is an end plan view ninety degrees from the view of FIG. 3, the opposed end being a mirror image thereof;

FIG. 5 is a bottom plan view; and,

FIG. 6 is a bottom perspective view. 

The ornamental design for a tray insert, as shown and described. 